The expression obtained when x is multiplied by 2 and then subtracted from 20 is

2x - 20

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2x + 20

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20 - 2x

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3x - 20

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Solution

The correct option is C 20 - 2x
The expression obtained when x is multipled by 2 is 2x.

Subsequently, 2x is subtracted from 20. So, the final expression is 20 - 2x.

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Question 17

The expression obtained when $x$ is multiplied by 2 and then subtracted from 3 is

(a) $2 x - 3$

(b) $2 x + 3$

(d) $3 x - 2$

x

The expression obtained by multiplying $(7 x - 4 x^{2} + 2 x^{3} - 5)$ with $(3 x - 2)$ is:

20 - 3 x + 4 x^{2} - x^{3}

x^{3} - x^{2} + 2 x - 19

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